The wife used the truck the other day and my wallet was in it so I raided her coin tray, I think I pulled 5 bucks in quarters out.
Went into the gas station and got what I got and handed the girl 4 dollars in quarters and she said" Thanks, were about out of change."
I handed her the other 4 quarters I had and she gave me a dollar... We both said thanks.
Honestly I don't give a shit about the tracking theories. The money they see in the bank is what my employer pays me. Anything made on the side doesn't go into the bank.
As for handling cash verses card. I lick my fingers between transactions